Metal culvert.



J B. JARMIN;

METAL OULVE'RT; APPLIOATION FILED FEB. 11, 1909.

983,623, Patented Feb.7, 1911.

I WITNESSES: j m IIVVENTOR Ma Q OW I By 3% ATTORNEY FFIE.

JAMES B. JARMIN, OF SPOKANE, WASHINGTON, ASSIGNOR OF ONE-HALF TO JOHN S.

BEALL, OF PORTLAND, OREGON.

METAL CULVERT.

To all whom it may concern:

Be it known that I, JAMES B. JARMIN, a citizen of the United States,residing at 1908 Broadway avenue, in the city of Spokane, county ofSpokane, Stateof Washington, have invented a new and useful Metal Cutvert, of which the following is aspecification.

The object is to provide a metal culvert pipe having a flat bottom and acurved top of a general semi-cylindrical shape, both the top and bottomportions of which are made of short sections so joined together and insuflicient numbers to form a completed culvert pipe and so arranged thatthe inside of the bottom will be smooth and free from any obstructionand serve as a base upon which the lower edges of the upper portion mayrest, said bottom having flanges along the edges thereof to whichflanges the lower edges of the upper portion are bolted, all parts beingnestible for the purpose of easy transportation to the place oferection. I attain this object by the novel composition and arrangementof parts as hereinafter fully described and illustrated in theaccompanying drawing in which Figure I. is a perspective View of anassembled pipe. Fig. II. shows a completed pipe in process of assemblingat the place of erection. Fig. III. is a cross section of several bottomplates, when assembled, ready for the top portion to be attachedthereto.Fig. IV. is a detailed top view of one of the sections of bottom.

The pipe may be constructed of any suitable metal and the top may beeither plain or corrugated, the general form of the culvert being thesame in either case but for the purpose of illustration Figs. I and IIshow the top portion made of corrugated metal and the bottom of plainmetal.

Bottom B as shown in Figs. III and IV has a flange C along each side.These flanges may be of any desired height but that of two inches willprobably be suflicient. At D flange G is offset as shown in Fig. IV andthis for the reason that another section of bottom may fit therein andthe two be bolted or riveted together at points G and F, this methodmaking the inside of flanges C C perfectly straight and withoutprojections; or projections on outside of flanges C C may also beavoided if flanges C C be cut 0E at points I) D. Bottom B also has ashoulder Specification of Letters Patent.

Application filed February 8, 1909.

Patented Feb. *7, 1911.

Serial No. 476,779.

or offset along line E thus giving the inside of the bottom a perfectlysmooth surface as shown in Fig. III, the two sections of bottom B beingriveted or bolted at F F. If desired, more rivets or bolts may be usedbetween points F F, thusmaking joints of bottom sections B B tighter andstronger.

Top A is of a general semi-cylindrical or circular shape as shown inFigs. I and II and the bottom edges thereof H H are cut or made smoothand straight and rest upon bottom B as shown and are secured to flangesC C at points G G by means of bolts or rivets and at as many otherpoints along said flanges G C as may be deemed necessary. The loweredges of top A being inside of flanges O C and bolted to same, it isimpossible for the top A to spread or contract when pressure is broughtto bear thereon by filling material. Top A may be composed of as manysections as desired joined as shown in Fig. I by rivets or bolts atpoints I but this joint need not be placed or disposed directly over thejoints of bottom plates B but may be so placed or disposed that thejoints of the top A and the joints, of the bottom B will be broken orstaggered thus giving the pipe greater strength.

Ordinarily water will flow through the culvert in a direction from J toK as shown in Fig. III but may flow either way and bottom joints at lineE may be made water tight by the use of a greater number of bolts orrivets.

The culvert having a flat bottom, it is a very easy matter to prepare asuitable bed on which to place the same and, when in place, it is alsovery easy to properly tamp filling material about and over the same,there being no pockets or points where tamping is not possible. Thejoint in bottoms B B at line E tends to stiffen the same and give to thebottom of the culvert greater strength. Offset E may be on the inside ofthe botton B if a corresponding portion of lower edges H H be removed.If metal used is of the thin sheet variety the offsets I) and E may bedispensed with as the natural spring of the metal will take their placeand the thickness thereof will be so small as not to interfere with .theproper assembling and use of the culvert. If corrugated metal is used toform the top section as is shown in Figs. I and II, at the point wheretop A adjoins top edges of flanges C C, regular openings correspondingto the corrugations will appear between flanges C O and top A but thesewill be in no way detrimental as they'will fill with dirt when pipe istamped into position and this dirt will have a tendency to make joint atpoint H water tight.

The drawings show sections of top and bottom made in lengths of abouttwo feet but they may be made of any desired length.

The use of the flat bottom gives to this culvert carrying capacity muchgreater than that of a round pipe, gives great stability and the generalshape is such that it will carry a great load without displacement.

My claims are as follows: v

1. A culvert comprising a series of lower sections each of plate formhaving up-standing side flanges with lateral offsets at one end and alsohaving between said offsets a depressed flange atone end so arrangedthat the opposite end of said base will engage the depressed end flangeof an adjacent section when placed in position and the lateral ofisetsin the adjacent base, means for rigidly securing the base sectionstogether, a series of top sections formed of corrugated metal the loweredges thereof designed to engage the inner sides of the rip-standingflanges of the base and so arranged that the ends of the corrugated topsections will overlapone corrugation of the adjacent section, and meansfor securing the top sections in position relative to the adjacent topsection and to the base in such a way that the upper portions of thebase of the sections of bases will be substantially in line throughoutthe entire length of the completely formed culvert and a smooth bottomformed thereby, said side flanges of the different sections also beingin line so that the sides of the various base sections will besubstantially in alinement with each other to receive the upper sectionswhen placed in position.

2. In a. culvert, a lower section of plate form having up-turned sideflanges with lateral offsets at one end and a depressed flange betweensaid offsets designed to receive the opposite end of a mating sectionand so constructed that when the mating end of the opposite section isplaced upon said depressed end flange and between said lateral offsetsthe upper portions of the bot toms of the two sections will besubstantially in alinement with each other as well as the inner surfacesof the up-turned side flanges. and curved corrugated top sectionsdesigned to be secured together at their adjacent ends and also securedto the up-turned flanges of the bases.

3. In a culvert, a lower section of plate form having up-turned sideflanges with lateral offsets at one end and a depressed flange betweensaid offsets designed to receive the opposite end of a mating sectionand so constructed that when the opposite 1 end of the mating section isplaced upon said depressed end flange and between said lateral offsetsthe upper portions of the bot toms of the two sections will besubstantially in alinement with each other as well as the inner surfacesof the up-turned side flanges, curved corrugated top sections designedto be secured together at their adjacent ends and also secured to theup-turned flanges of the bases, and means for securing the basestogether.

4. In a culvert, a lower section of plate form having up-turned sideflanges with lateral offsets at one end and a depressed flange betweensaid offsets designed to re ceive the opposite end of a mating sectionand so constructed that when the opposite end of the mating section isplaced upon said depressed end flange and between said lateral offsetsthe upper portions of the bot toms of the two sections will besubstantially in alinement with each other as well as the inner surfacesof the rip-turned side flanges, curved corrugated top sections designedto be secured together at their adjacent ends and also secured to theup-turned flanges of the bases. means for securing the bases together,and means for securing the bases and top sections together.

5. In a culvert, a lower section of plate form having up-turned sideflanges with lateral offsets at one end and a depressed flange betweensaid offsets designed to receive the opposite end of a mating sectionand so con structed that when the opposite end of the mating section isplaced upon said depressed end flange and between said lateral offsetsthe upper portions of the bottoms of the two sections will besubstantially in alinement with each other as well as the inner surfacesof the up-turned side flanges, curved corrugated top sections designedto be secured together at their adjacent ends and also secured to theup-turned flanges of the bases, and means for securing the top sectionstogether.

6. In a culvert, a lower section of plate form having upturned sideflanges with lateral offsets at one end and a depressed flange betweensaid offsets designed to receive the opposite end of a mating sectionand so constructed that when the opposite end of the mating section isplaced upon said depressed end flange and between said lateral oflsetsthe upper portions of the bottoms of the two sections will besubstantially in alinement with each other as well as the inner surfacesof the up-turned side flanges, curved corrugated top sections designedto be secured together at their adjacent ends and also secured to theup-t-urned flanges of the bases, means for securing the top sectionstogether, and means for securing the base sections together.

7. A culvert comprising a series of lower sections each of plate formhaving up-standing side flanges with lateral offsets at one end and alsohaving between said offsets a depressed flange at one end so arrangedthat the opposite end of said base will engage the depressed end flangeof an adjacent section and the lateral offsets in the adjacent base whenplaced in position, means for rigidly securing the base sectionstogether, a series of top sections the lower edges thereof designed toengage the inner sides of the upstanding flanges of the base and soarranged that the ends of the top sections will overlap, and means forsecuring the top sections in position relative to the adjacent topsection and to the base in such a way that the upper portions of thebase of the sections of bases will be substantially in line throughoutthe entire length of the completely formed culvert and a smooth bottomformed thereby, said side flanges of the different sections also beingin line so that the sides of the various base sections will besubstantially in alinement with each other to receive the upper sectionswhen placed in position.

8. A culvert comprising a series of lower sections each of plate formhaving tip-standing side flanges with lateral offsets at one end andalso having between said offsets a depressed flange at one end soarranged that the opposite end of said base will engage the depressedend flange of an adjacent section when placed in position and thelateral offsets in the adjacent base, means for rigidly securing thebase sections together, a series of top sections the lower edges thereofdesigned to engage the inner sides of the upstanding flanges of the baseand so arranged that the ends of the top sections will overlap, meansfor securing the top sections in position relative to the adjacent topsection and to the base in such a way that the upper portions of thebase of the sections of bases will be substantially in line throughoutthe entire length of the completely formed culvert and a smooth bottomformed thereby, said side flanges of the different sections also beingin line so that the sides of the various base sections will besubstantially in alinement with each other to receive the upper sectionswhen placed in position, means for securing the top and bottom portionsof each section together, and means for securing the complete sectionstogether.

9. As a new article of manufacture, a metal culvert base or metalsect-ion of plate form having Lip-standing side flanges with lateraloffsets at one end and also having between said offsets a depressed endflange.

JAMES B. JARMIN.

